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I found several of these fly puparia in medieval latrines from Copenhagen, Denmark. Anyone know what genus or species it belongs to? About 2 mm long.
Found them in samples with Fannia scalaris, Thoracochaeta zosterae, Ischiolepta pusilla, Muscina stabulans, Limosininae spp., Hydrellia spp. - and others if that helps. It may not have anything to do with faeces as all kinds of organic material was dumped in the latrines.